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Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj （ 60GHz ）

Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj （ 60GHz ）. Date: 20 13-07-14. Presenter:. Author List. Abstract. This document is to propose a MAC protocol amendment to support dynamic channel transfer procedure for 802.11aj (60GHz)

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Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj （ 60GHz ）

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  1. Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj（60GHz） Date:2013-07-14 Presenter: Jiamin Chen, Huawei

  2. Author List Jiamin Chen, Huawei

  3. Abstract • This document is to propose a MAC protocol amendment to support dynamic channel transfer procedure for 802.11aj (60GHz) • This contribution has been discussed in CWPAN group Jiamin Chen, Huawei

  4. Background(1/2) Channelization for 60GHz bands in China • Proposed Channelization for 60GHz bands for 802.11aj • There are 6 logical channels: 2 bands with 2.16GHz bandwidth (Channel 2 & 3), 4 bands with 1.08GHz bandwidth (Channel 5, 6, 7, 8); • Supporting more than 3 logical channels for 802.11aj and keeping the backward compatibility with 802.11ad device； Jiamin Chen, Huawei

  5. Background(2/2) • Regulations that apply to the 60GHz band in China require RLANs operating in the Chinese 60 GHz band to use channel with 1.08GHz or 2.16GHz bandwidth, which requires a mechanism to coordinate the allocation of operating channel. • This document propose a mechanism referred to as Dynamic Channel Transfer (DCT). This mechanism can improve the flexibility and channel utilization efficiency when networking on Chinese 60Ghz frequency band, in case that the existing idle channel can not satisfy the networking requirement for 802.11aj devices.  . Jiamin Chen, Huawei

  6. Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj(1/4) • Case 1 (Channel 6, 8 are occupied by existing BSS-1 and BSS-2 at 1.08GHz) • New STA (to become PCP/AP-3) wants to start a new BSS-3 at 2.16GHz. • PCP/AP-3 request BSS-1 on channel 6 to move to channel 7, or request BSS-2 on channel 8 to move to channel 5. • PCP/AP-1 or PCP/AP-2 shall assess the request against its capabilities and the impact on its BSS’s performance. • PCP/AP-1 or PCP/AP-2 may refuse the request for some reasons such as their BSS are busy and so on. • If the request is confirmed, PCP/AP-3 may have a chance to use channel 2 or channel 3(2.16GHz) to start a new BSS. • Case 2 / 3 are similar to Case 1 Some cases (Case 1 to Case 3): A new STA may request an existing BSS to move to another available channel to allow the new 802.11aj STAs to establish a new BSS. Jiamin Chen, Huawei

  7. Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj（2/4） • Case 4 （Channel 2, 8 are occupied by BSS-1 at 2.16 GHz and BSS-2 at 1.08 GHz respectively） • New STA (to become PCP/AP-3) wants to start a new BSS-3 at 2.16 GHz. • PCP/AP-3 requests BSS-1(PCP/AP-1) on channel 2 to move to channel 7. • The PCP/AP-1 shall assess the request against its capabilities and the impact on its BSS’s performance . • PCP/AP-1 may refuse the request for some reasons. • If the request is confirmed, PCP/AP-3 may have a chance to use channel 2 (2.16GHz) for networking. Jiamin Chen, Huawei

  8. Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj(60GHz) (3/4) • Public action frame in 802.11spec • Inter-BSS and AP to unassociated-STA communications • Intra-BSS communication and so on • Proposed new public action frame for the DCT procedure: • DCT Measurement Request frame • Request one or more STAs in the DCT responder PCP/AP’s BSS（PBSS or Infrastructure BSS）to measure a specified channel or all other channels within supported operating class. • DCT Measurement Report frame • Be transmitted from the DCT responder PCP/AP to the DCT requester PCP/AP to report the result of channel measurement or refuse the DCT request. • DCT Request frame • Request DCT responder PCP/AP’s BSS to move to an new available channel reported in the DCT Measurement Report frame. • DCT Response frame • Be transmitted from the DCT responder PCP/AP to the DCT requester PCP/AP to confirm or refuse the DCT request.

  9. Dynamic Channel Transfer(DCT) procedure for IEEE 802.11aj(4/4) Dynamic Channel Transfer (DCT) procedure • assessing idle channel for networking • Requesting of measurements for new channel for the DCT responder BSS • Reporting of the result of measurements • Requesting existing BSS to migrate to a new channel • Networking on target channel Jiamin Chen, Huawei

  10. Conclusion • This presentation is to propose a mechanism referred to as Dynamic Channel Transfer (DCT) procedure. This mechanism can improve the flexibility and channel utilization efficiency when networking on Chinese 60Ghz frequency band, in case that the existing idle channel bandwidth could not satisfy the networking requirement for 11aj devices. • Comments and suggestions are welcome! Jiamin Chen, Huawei

  11. Reference [1]  IEEE 802.11-12/1197r0 - Physical Channel Consideration for Chinese 60GHz Band Thank You! Jiamin Chen, Huawei

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